State-owned energy distributor TasNetworks is reviewing its pricing structures, and is considering scrapping Tariff 41, a lower electricity rate that covers hot water systems and directly wired heat pumps.

It has been suggested that Tariff 31, which covers other residential power, would be lower as a result.

Goanna Energy principal consultant Marc White said because TasNetworks was revenue constrained, the net effect of any changes would not necessarily lead to higher power prices.

"We expect that those changes in relative rates will impact on decisions around wood heating, gas heating, gas hot water, solar hot water, absolutely," he said.

"If hot water tariffs were to transition to more cost reflective prices, then yes, moving to solar hot water or solar power has an improved business case." 

He said hot water and heating represented about 60 per cent of the average household's power use.

Opposition Leader Bryan Green said the state government should resolve the tariff issue immediately, saying it was causing uncertainty for building projects.

"We can’t have a situation where Tasmanians are delaying projects because they don’t know what sort of heating to install," he said.

"By refusing to rule out scrapping the Tariff, (Energy Minister) Matthew Groom is leaving Tasmanians in limbo."

Premier Will Hodgman said TasNetworks was involved in a detailed consultation process

"The process is underway, it's got to happen in an environment that allows the allows the adequate analysis to be conducted," he said.

"We are determined in our resolve to keep power prices down in Tasmania."

Meanwhile, Aurora Energy says 1663 people are currently on the "Your Energy Support" program, which is designed to help vulnerable Tasmanians manage their power bills.